<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片试图区域 -->
    <el-card>
      <!-- 搜索于添加区域 -->

      <el-row :gutter="20">
        <el-col :span="8">
          <!-- 点击清空之后自动调用getUserList函数 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
        <el-col></el-col>
      </el-row>
    </el-card>
    <!-- 用户列表区域 -->
    <el-table :data="userList" border stripe>
      <el-table-column type="index"></el-table-column>
      <el-table-column label="姓名" prop="username"></el-table-column>
      <el-table-column label="邮箱" prop="email"></el-table-column>
      <el-table-column label="电话" prop="mobile"></el-table-column>
      <el-table-column label="角色" prop="role_name"></el-table-column>
      <el-table-column label="状态">
        <template slot-scope="scope">
          <!-- 定义作用域插槽 slot-scope="scope" ，接收当前那行的数据 -->
          <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作">
        <template slot-scope="scope">
          <!-- 修改按钮 -->

          <el-tooltip class="item" effect="dark" content="修改角色" placement="top" :enterable="false">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
          </el-tooltip>
          <!-- 删除按钮 -->
          <el-tooltip class="item" effect="dark" content="删除角色" placement="top" :enterable="false">
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
          </el-tooltip>

          <!-- 分配角色按钮 -->
          <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="setRole(scope.row)"
            ></el-button>
          </el-tooltip>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页区域 -->
    <div class="block">
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </div>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主题区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="adduser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <!-- 内容主题区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        //合法邮箱
        return cb()
      }
      cb(new Error('请输入合法邮箱'))
    }
    //验证手机号的规则
    var checkMoblie = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^([0|86|17951])?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        //合法邮箱
        return cb()
      }
      cb(new Error('请输入合法手机号'))
    }

    return {
      //获取用户对象的参数对象
      queryInfo: {
        query: '',
        //当前的页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 5
      },
      userList: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: ''
      },
      //添加表单的验证规则对象
      //验证用户名是否合法
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', tirgger: 'blur' },
          {
            min: 2,
            max: 10,
            message: '用户名的长度在2~10个字符之间',
            tirgger: 'blur',
            mobile: ''
          }
        ],
        password: [
          { required: true, message: '请输入密码', tirgger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '用户名的长度在6~15个字符之间',
            tirgger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', tirgger: 'blur' },
          { validator: checkEmail, tirgger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', tirgger: 'blur' },
          { validator: checkMoblie, tirgger: 'blur' }
        ]
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //修改时验证用户名是否合法
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', tirgger: 'blur' },
          { validator: checkEmail, tirgger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', tirgger: 'blur' },
          { validator: checkMoblie, tirgger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      roleList: [],
      // 已选中的角色id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status != 200)
        return this.$message.error('获取用户列表失败！')
      this.userList = res.data.users
      this.total = res.data.total
    },
    //监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听页码改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听switch开关状态的变化
    async userStateChanged(userinfo) {
      // console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status != 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      //对话框关闭后自动重置
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮添加新用户,预校验:通过时valid值为true，否则为false
    adduser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status != 201) {
          return this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        //重新获取用户列表数据
        this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status != 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.editForm = res.data
    },
    editDialogClosed() {
      //对话框关闭后自动重置
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        //可以发起修改用户的网络请求
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('更新用户失败！')
        }
        // 关闭对话框
        this.editDialogVisible = false
        //重新获取用户列表数据
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    //根据id删除对应的用户
    async removeUserById(id) {
      //弹框询问是否删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => {
        return err
      })
      //如果用户确认删除，则返回值为字符串confirm
      //如果用户取消了删除，则返回值为字符串cancel
      // console.log(confirmResult);
      if (confirmResult === 'cancel') {
        return this.$message.info('已经取消了删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status != 200) {
        return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      //在展示对话框之前获取所有的角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    //点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const {
        data: res
      } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status != 200) {
        return this.$message.error('分配角色失败！')
      }
      this.$message.success('分配角色成功！')
      this.setRoleDialogVisible = false
      this.getUserList();
    },
    //监听分配角色对话框的关闭事件
    setRoleDialogClosed(){
      this.selectedRoleId = ''
      this.userinfo = userinfo
    }
  }
}
</script>

<style lang="less" scope>
</style>